JP4678416B2 - Airbag device - Google Patents

Description

  The present invention relates to an airbag device that is mounted on a vehicle and in which a bag is deployed in front of an occupant in a vehicle sudden deceleration state or the like.

  A tubular body (airbag) of an airbag device disclosed in Patent Document 1 below is provided with a tubular tube. The tube is provided with the tip side positioned inside the bag, and the tip of the tube is held by a clamp or the like, and the tube is positioned inside the bag even when the bag is inflated and deployed. Is preserved. In a state where the tube is held inside the bag body inflated and deployed in this manner, the tube is crushed by the gas pressure in the bag body and kept flat.

When the holding of the tube by the clamp is canceled in a state where the bag body is inflated and deployed, the tube extends to the outside of the bag body by the pressure in the bag body, and further, the tube is expanded by the pressure of the gas in the bag body. In this state, the gas in the bag body is released from the base end of the tube to the outside of the bag body through the tip. Thereby, the gas pressure in the bag is adjusted.
Japanese Laid-Open Patent Publication No. 2004-155420

  In the configuration disclosed in Patent Document 1, when the holding of the tube by the clamp is canceled, the tube extends to the outside of the bag body by the pressure in the bag body, and this extending direction is on the outer side in the vehicle width direction. If there is, the tube interferes with a vehicle pillar or window glass. As described above, the tube interfered with the vehicle pillar, the window glass, or the like cannot sufficiently extend and bends in the middle. If the tube is bent in this way, the gas cannot be smoothly discharged through the tube.

  In view of the above fact, an object of the present invention is to obtain an airbag device that can smoothly discharge gas.

The airbag device according to the first aspect of the present invention includes a bag body that is inflated and deployed when a gas is supplied therein and an internal pressure is increased, and is formed into a cylindrical shape, and the bag body is in an inflated and deployed state. A base end portion is connected to an edge of an inner hole formed in a side portion of the bag body facing inward in the vehicle width direction of the vehicle, and the distal end side is outside the bag body in an inflated and deployed state of the bag body. a tube vent was found provided releasably the bag only the bag body of the gas in the vehicle width direction inner side from the bag extends out towards the vehicle width direction outside the inflated deployed state of the bag The base end is connected to the edge of the outer hole formed in the side portion of the bag body facing the other side, and the tip end side extends to the outside of the bag body due to an increase in internal pressure, and the edge of the outer hole portion preceding a cylindrical dummy vents tip opposite side is closed and the connection portion, one end of the tube vent and And the other end side is held, the tube vent is held in a state where the distal end side of the tube vent is arranged inside the bag body, and the other end when the bag body is inflated and deployed. And a tether that allows the tube vent to extend outside the bag body by releasing the holding of the side.

According to the airbag device of the present invention as set forth in claim 1, an inner hole is formed on the side of the bag body that faces the inner side in the vehicle width direction in the inflated and deployed state, and is formed at the edge of the inner hole. The proximal end of the tube vent is connected. One end of the tether is locked to the tip of the tube vent. When the internal pressure of the bag body is increased by supplying gas to the bag body, the bag body is inflated and deployed . If the other end of the tether is held in this state, the tube vent is held in a state where the tip side is located inside the bag body.

  In this state, since the tube vent is crushed by the internal pressure of the bag body, gas can be prevented from leaking from the bag body to the outside of the bag body via the tube vent. Thereby, the internal pressure of the bag body in a state where the bag body is inflated and deployed can be maintained, and the bag body inflating and deploying the body of a relatively large passenger can be effectively received.

On the other hand, when the gas is supplied to the bag body and the holding of the other end of the tether is released when the bag body is inflated and deployed, the tube vent extends to the outside of the bag body due to the gas pressure. It expands with the gas pressure of the body, and the tip of the tube vent opens. Thereby, the inside and outside of the bag body communicate with each other by the tube vent, and the gas in the bag body is released to the outside of the bag body through the tube vent. Thereby, the internal pressure of a bag body is adjusted.

  Here, when the gas in the bag body is released to the outside, the tube vent extends to the outside of the bag body, but the inner hole to which the base end portion of the tube vent is connected is located in the vehicle width direction in the expanded state of the bag body. It is formed in the side part of the bag body which faces the other side. For this reason, the tube vent extended to the outside of the bag body can be extended smoothly and sufficiently without receiving from the vehicle body such as a pillar.

On the other hand, an outer hole is formed in a side portion of the bag body that faces the outer side in the vehicle width direction in an inflated and deployed state, and a base end portion of the dummy vent is connected to an edge of the outer hole. When the bag body is inflated and deployed, the distal end side of the tube vent extends outside the bag body due to the internal pressure of the bag body. Here, the outer hole portion to which the base end portion of the dummy vent is connected is formed on the side portion of the bag body facing outward in the vehicle width direction in the inflated and deployed state of the bag body.

  That is, in the airbag device according to the present invention, in a state where the tube vent extends to the outside of the bag body, the dummy vent extends on the opposite side of the tube vent through the bag body. Thus, by extending the tube vent and the dummy vent from the left and right sides of the bag body, the left and right balance of the bag body in the inflated and deployed state is improved, and the bag body is less likely to swing from side to side and the bag body is stabilized.

  In addition, since the dummy vent is closed at the tip, that is, at the end opposite to the connection portion with the edge of the outer hole, the bag vent is extended in the state where the tube vent extends to the outside of the bag. The dummy vent extends on the opposite side of the tube vent, but no gas is released from the dummy vent. Thereby, the gas emitted from the bag body is basically not affected by the pillars of the vehicle located on the outer side in the vehicle width direction with respect to the bag body.

The airbag device according to a second aspect of the present invention is the airbag device according to the first aspect of the present invention, wherein the tube vent and the dummy vent are symmetrical with respect to the vehicle longitudinal direction in the inflated and deployed state of the bag body. Provided.

According to the airbag device of the second aspect of the present invention, the tube vent and the dummy vent extend from the bag body so that the tube vent and the dummy vent are symmetric with respect to the vehicle longitudinal direction. For this reason, the balance of the left and right sides of the bag body in the inflated and deployed state is further improved, and the bag body is less likely to swing from side to side and the bag body is further stabilized.

According to a third aspect of the present invention, in the air bag apparatus according to the second aspect of the present invention, the tube vent and the dummy vent have the same shape.

In the airbag device according to the third aspect of the present invention, since the tube vent and the dummy vent have the same shape, the left and right balance of the bag body is good in the inflated and deployed state of the bag body, and the bag body is in the inflated and deployed state. Even more stable.

Airbag apparatus according to the present invention described in claim 4 is the invention according to any one of claims 1 to 3, and the vehicle rear side end portion of the bag that is inflated and deployed, the inflation and deployment It is provided with the tube vent forward from the central portion along the longitudinal direction of the vehicle between the vehicle rear side end portion of the portion located on the interior of the vehicle of the bag was.

According to the airbag device of the present invention as set forth in claim 4 , the vehicle in the vehicle rear side end portion of the inflated and deployed bag body and the portion of the inflated and deployed bag body located on the vehicle interior side. A tube vent is provided on the front side of the vehicle with respect to the center portion between the front end portion. For this reason, if the position of the tube vent is the fixed end of the bag body (that is, the side of the instrument panel of the vehicle if the airbag device is a passenger seat, the position of the vehicle is Close to the steering wheel side.

  The unfolded bag body tends to swing around this fixed end, but if the tube vent position is close to the fixed end, the moment generated by the release of gas from the tube vent will be excessive. Therefore, the left and right shaking of the expanded and inflated bag body is prevented or effectively suppressed.

According to a fifth aspect of the present invention, there is provided an airbag apparatus according to the first aspect of the present invention, wherein the inflated and deployed bag body and the instrument panel of the vehicle according to any one of the first to fourth aspects. Of the vehicle rear side end portion of the contact range and the vehicle rear side end portion of the contact range between the inflated and deployed bag body and the windshield glass of the vehicle, the tube is closer to the vehicle front side than the one located on the vehicle rear side. The tube vent is provided so that at least a part of the vent is located.

According to the airbag device of the present invention described in claim 5 , when the bag body is inflated and deployed, a part of the bag body (for example, a part of the lower surface of the bag body in the inflated and deployed state) While being in contact with the instrument panel, the other part (for example, part of the upper surface of the bag body in the inflated and deployed state) is in contact with the windshield glass of the vehicle.

  Here, in the airbag apparatus according to the present invention, the end portion on the vehicle rear side of the contact range between the bag body and the instrument panel, and the end portion on the vehicle rear side in the contact range between the bag body and the windshield glass. Among these, the tube vent is provided so that at least a part of the tube vent is located on the vehicle front side rather than the side located on the vehicle rear side.

  For this reason, for example, the end portion on the vehicle rear side of the contact range between the bag body and the instrument panel is located on the vehicle rear side from the end portion on the vehicle rear side in the contact range between the bag body and the windshield glass. If the bag vents to the left and right due to the gas being released from the tube vent, this fluctuation may cause the bag and the instrument panel in the contact area between the bag and the instrument panel. It is prevented or suppressed by friction between them.

  In addition, even if the friction does not occur on the vehicle rear side with respect to the contact range between the bag and the instrument panel, the gas released from the tube vent is provided by the tube vent as described above. It is difficult to influence. For this reason, it is possible to prevent or suppress the bag body from being easily shaken from side to side, and to stabilize the bag body in the inflated and deployed state.

  When the end of the contact range between the bag body and the windshield glass on the vehicle rear side is located on the vehicle rear side of the vehicle rear side of the contact range between the bag body and the instrument panel, the bag Friction between the bag body and the windshield glass at the contact portion between the body and the windshield glass has the same effect as described above.

According to a sixth aspect of the present invention, there is provided an airbag device according to the fifth aspect of the present invention, wherein, in the fifth aspect of the present invention, a vehicle rear side end portion of a contact range between the inflated and deployed bag body and the vehicle instrument panel; At least a part of the tube vent is positioned on the vehicle front side of the vehicle rear side end portion of the contact range between the inflated and deployed bag body and the windshield glass of the vehicle. The above-mentioned tube vent is provided.

In the airbag apparatus according to the sixth aspect of the present invention, the vehicle rear side end portion of the contact range between the bag body and the instrument panel and the vehicle rear side of the contact range between the bag body and the windshield glass. The tube vent is provided so that at least a part of the tube vent is located further on the vehicle front side than the one located on the vehicle front side.

  For this reason, even if the bag is about to sway from side to side due to the gas being released from the tube vent, this swaying occurs between the bag and the instrument panel in the contact range between the bag and the instrument panel. It is prevented or suppressed by both friction and friction between the bag body and the windshield glass in the contact range between the bag body and the windshield glass. Thereby, it can prevent or suppress that a bag body does not shake easily right and left, and can stabilize the bag body of an expansion | deployment state.

As described above, in the airbag device according to the first aspect of the present invention, the tube vent receives from a vehicle body such as a pillar when the gas is discharged from the inflated and deployed bag body to adjust the internal pressure of the bag body. It is possible to smoothly and sufficiently extend to the outside of the bag without any trouble, and thereby the gas can be released smoothly. Moreover, in the state where the tube vent extends to the outside of the bag body, the dummy vent extends on the opposite side of the tube vent through the bag body, so the left and right balance of the bag body in the inflated and deployed state is improved, The bag body is stable because it does not easily shake from side to side. In addition, since no gas is released from the dummy vent, the gas released from the bag body is not easily affected by the vehicle body such as a pillar.

In the airbag device according to the second aspect of the present invention, the right and left balance of the bag body in the inflated and deployed state is further improved, and the bag body is less likely to swing from side to side and the bag body is further stabilized.

In the airbag device according to the third aspect of the present invention, since the tube vent and the dummy vent have the same shape, the left and right balance of the bag body is good in the inflated and deployed state of the bag body, and the bag body is in the inflated and deployed state. Even more stable.

In the airbag device according to the fourth aspect of the present invention, since the moment generated by releasing the gas from the tube vent does not become excessively large, the bag body hardly shakes to the left and right, and the bag body is stable.

According to the fifth aspect of the present invention, the airbag apparatus according to the present invention can effectively prevent or suppress the swinging of the bag body from side to side due to the release of gas from the tube vent.

In the airbag apparatus according to the present invention described in claim 6 , the bag body and the windshield are subjected to friction between the bag body and the windshield, and the bag body and the instrument are caused to swing left and right by the gas released from the tube vent. Can be effectively prevented or suppressed by friction with the ment panel.

Next, each embodiment of the present invention will be described. Of the following embodiments, the first embodiment, the third embodiment, the fourth embodiment, and the fifth embodiment are reference examples not included in the present invention. .
<Configuration of First Embodiment>
FIG. 1 is a perspective view showing a main part of an airbag device 10 according to the first embodiment, and FIG. 5 is a perspective view of the airbag device 10 as viewed from the back side ( In addition, the bag body 30 mentioned later in FIG. 1 is an unfolded state, and the bag body 30 is a folded state in FIG. 5).

  As shown in these drawings, the airbag device 10 includes a base plate 12. As shown in FIG. 5, if the airbag device 10 is for a passenger seat of the vehicle 14, the airbag device 10 is fixed to a vehicle body structural member such as reinforcement on the back side of the instrument panel 16 of the vehicle 14. Although the detailed illustration is omitted, if the airbag device 10 is for the driver's seat of the vehicle 14, the base plate 12 is disposed inside the rim constituting the steering wheel, and is fixed to the spokes of the steering wheel. The

  The base plate 12 includes a bottom wall 20 having a substantially rectangular shape in plan view, and a peripheral wall 22 is erected from the outer peripheral portion of the bottom wall 20 upward (downward in FIG. 5). The base plate 12 is provided with a bag 30 in a folded state. The bag body 30 has an opening end fixed to the bottom wall 20 by a bracket or the like inside the peripheral wall 22. The base plate 12 is provided with an inflator 40. The inflator 40 has a main body portion having a substantially disk shape or a substantially cylindrical shape having a relatively short axial dimension.

  A flange portion 42 (not shown in FIG. 5) shown in FIGS. 2 to 4 is formed in an intermediate portion of the main body portion of the inflator 40 in the axial direction. Further, the lower side (upper side in FIG. 5) of the main body portion of the inflator 40 than the flange portion 42 passes through a circular hole 44 formed in the bottom wall 20. The inflator 40 partially passing through the circular hole 44 in this way has the flange portion 42 in contact with the upper surface of the bottom wall 20 and is fixed to the bottom wall 20 with the space between the circular hole 44 and the inflator 40 sealed. Has been.

  The inflator 40 attached to the base plate 12 in this manner is located inside the open end of the folded bag body 30. When the inflator 40 is actuated, gas is instantaneously generated, and further the generated gas is discharged to the outside of the inflator 40 above the bottom wall 20. Thus, the gas released from the inflator 40 expands the inflator 40 with the pressure.

  As shown in FIG. 2, an airbag door 50 is formed on the instrument panel 16 of the vehicle 14 corresponding to the airbag apparatus 10. The airbag door 50 has a rectangular shape in plan view whose outer peripheral shape is larger than that of the peripheral wall 22 (that is, the base plate 12). A hinge portion 52 is formed on the front side of the airbag door 50 at the boundary with the portion other than the airbag door 50 of the instrument panel 16. The instrument panel 16 is thinner than the portion other than the hinge portion 52 in the instrument panel 16 at the portion designated as the hinge portion 52, whereby the hinge portion 52 other than the hinge portion 52 in the instrument panel 16 is provided. Mechanical strength is weaker than the part.

  Further, a breakage portion 54 is formed at the boundary with the portion other than the airbag door 50 of the instrument panel 16 on both the left and right sides and the rear side of the airbag door 50. The instrument panel 16 is made thinner than the hinge panel 52 in the instrument panel 16 at the part designated as the fracture part 54, whereby the fracture part 54 is further mechanically stronger than the hinge part 52. Is weak.

  When the bag body 30 that is inflated by the pressure of the gas supplied from the inflator 40 presses the airbag door 50 from the back side of the instrument panel 16 as described above, the instrument panel 16 is broken at the breaking portion 54. Furthermore, the airbag door 50 rotates around the hinge portion 52 as an axis. As a result, the instrument panel 16 is opened at the position where the airbag door 50 is set, and the inflated bag body 30 can be deployed inside the vehicle 14.

  On the other hand, as shown in FIG. 1, the bag body 30 includes a bag body 60. The bag body 60 has a lateral base cloth 62 whose outer surface faces the outer side in the width direction of the vehicle 14 in the inflated and deployed state of the bag body 30, and an outer surface that is generally inward in the width direction of the vehicle 14 in the inflated and deployed state. And a side base fabric 64 facing the side. The outer peripheral portion of the side base cloth 62 and the outer peripheral portion of the side base cloth 64 are connected by the outer peripheral base cloth 66 except for the portion corresponding to the opening end of the bag body 30, thereby the bag body. 60 is formed in a bag shape as a whole.

As shown in FIGS. 1, 3, and 4, the side base cloth 64 that has the outer surface facing inward in the width direction of the vehicle 14 in the inflated and deployed state of the bag body 30 as described above has an inner hole portion. A hole 82 is formed. Corresponding to the hole 82, the side base cloth 64 is provided with a tubular tube vent 84 as a gas pressure adjusting means. In the present embodiment, the tube vent 84 is open at both ends, and is formed so as to gradually taper from the proximal end side toward the distal end side in the deployed state. A base end portion (open end on the base end side) of the tube vent 84 is connected to the periphery of the hole portion 82, and the tube vent 84 and the inside of the bag body 60 are communicated with each other through the hole portion 82.

  One end of a tether 88 is locked to the tip of the tube vent 84. The tether 88 is formed in a flexible long string shape or a long and narrow band shape, and the other end side of the tether 88 passes through the inside of the bag body 60 and is formed on the vehicle 14. It passes through the hole 80 and extends to the outside of the base plate 12.

  As shown in FIG. 5, a tether holding device 100 as a holding means is provided on the back side of the vehicle 14 constituting the base plate 12. As shown in FIG. 6, the tether holding device 100 includes a cylinder 112. As shown in FIGS. 5 and 6, the cylinder 112 is formed in a cylindrical shape whose axial direction is substantially parallel to the back surface of the base plate 12. As shown in FIG. 6, a piston 114 is slidably disposed along the axial direction of the cylinder 112 inside the cylinder 112.

  A proximal end portion of a rod-shaped holding rod 116 is connected to one end of the piston 114 coaxially and integrally with the piston 114. The front end side of the holding rod 116 passes through a through hole 120 formed in a wall portion 118 that closes one end of the cylinder 112 in the axial direction, and protrudes to the outside of the cylinder 112. The vicinity of the tip of the holding rod 116 protruding to the outside of the cylinder 112 passes through the small hole 80, and an annular hook 136 formed at the tip of the tether 88 that has passed through the small hole 80 is used as a holding rod. The front end side of 116 passes. As described above, the holding rod 116 passes through the hanging ring 136 so that the other end of the tether 88 is restricted from passing through the small hole 80 toward the inside of the base plate 12.

  In addition, as shown in FIG. 5, the tether holding device 100 includes a gas generation unit 122. The gas generator 122 is integrally formed with the cylinder 112 on the side of the cylinder 112 along a direction orthogonal to the axial direction of the cylinder 112. As shown in FIG. 6, a micro gas generator 124 as a gas generating means is provided inside the gas generating unit 122. The micro gas generator 124 is provided with an ignition device that ignites the gas generating agent based on an ignition signal from a control means such as an air bag ECU (not shown) or a gas generating agent that instantaneously generates gas by combustion.

  The gas generator 122 communicates with the cylinder 112 in the vicinity of one end in the axial direction of the cylinder 112, and the gas generated when the gas generating agent of the micro gas generator 124 burns is separated from the wall 118 of the cylinder 112. It is supplied between the piston 114. For this reason, when the gas is supplied to the cylinder 112 by operating the micro gas generator 124, the internal pressure of the cylinder 112 increases between the piston 114 and the wall portion 118, and as shown in FIG. Slides to the other end side of the cylinder 112 (that is, the side opposite to the wall portion 118). As a result, the holding rod 116 is drawn into the cylinder 112 from the base end side, and the holding rod 116 is detached from the small hole 80. When the holding rod 116 is detached from the small hole 80 in this way and the holding rod 116 comes out of the hanging ring 136 of the tether 88, the holding of the tether 88 by the holding rod 116 is canceled and the inside of the base plate 12 is directed. The tether 88 can pass through the small hole 80.

<Operation and Effect of First Embodiment>
Next, the operation and effect of the present embodiment will be described.

  In the airbag device 10, vehicle state detection means such as an acceleration sensor detects that the vehicle has suddenly decelerated, and a detection signal output from the detection means is input to control means such as an airbag ECU. Then, an ignition device (not shown) provided in the inflator 40 is operated. When the ignition device of the inflator 40 is operated, the gas generating agent in the inflator 40 is burned by the ignition device. When the gas generating agent burns, a large amount of gas is instantly generated.

  Thus, the gas generated in the inflator 40 is discharged to the outside of the inflator 40 above the bottom wall 20. Since the inflator 40 is provided inside the opening end of the bag body 30, the gas released from the inflator 40 is fed into the bag body 30. When the gas is fed into the bag body 30, the bag body 30 expands. The inflated bag body 30 presses the airbag door 50 from the back side of the instrument panel 16. When the airbag door 50 is pressed against the bag body 30, the instrument panel 16 is broken at the breaking portion 54, and the airbag door 50 is rotated around the hinge portion 52. Thus, when a rectangular hole is formed in the instrument panel 16, as shown in FIG. 3, the bag body 30 inflated from this hole is attached to the seat corresponding to the airbag device 10 on the indoor side of the vehicle 14. Unfolds forward.

  Thus, when the bag body 30 is deployed in the interior of the vehicle 14 and the occupant of the seat corresponding to the airbag device 10 moves to the front side of the vehicle 14 due to inertia at the time of sudden deceleration of the vehicle, the deployed bag. The body 30 receives the occupant's body.

  Further, as described above, the hole portion 82 is separated from the base plate 12 in the process of expanding and developing the bag body 30. In this manner, the hole 82 is separated from the base plate 12, so that the other end side is held by the holding rod 116 of the tether holding device 100 and the tether 88 whose one end side is positioned in the vicinity of the hole 82 is extended. When the bag 30 is still inflated and deployed with the tether 88 extended and the hole 82 is separated from the base plate 12, the tether 88 pulls the tip of the tube vent 84 as shown in FIG. As a result, when the bag body 30 expands until it is deployed inside the vehicle 14, as shown in FIG. 7, the tube vent 84 has its distal end side extending inward of the bag body 60 relative to the proximal end side. Is pulled by the tether 88 and held in this state.

  Here, for example, when it is determined that the physique of the occupant seated in the seat is not small based on a signal from the occupant physique detection means such as a load sensor provided in the seat, the micro gas generator 124 is activated. Therefore, the holding rod 116 remains passing through the hanging ring 136 of the tether 88. For this reason, the tube vent 84 is pulled by the tether 88 and is held in a state in which the distal end side thereof extends toward the inner side of the bag body 60 with respect to the proximal end side.

  In this state, the tube vent 84 is crushed by the internal pressure in the bag body 60, so that gas can be prevented from leaking from the bag body 30 to the outside of the bag body 30 via the tube vent 84. Thereby, the internal pressure of the bag body 30 in a state in which the bag body 30 is inflated and deployed can be maintained, and the bag body 30 that has inflated and deployed the body of a relatively large passenger can be effectively received.

  On the other hand, for example, if it is determined that the physique of the occupant seated in the seat is small based on a signal from the occupant physique detection means such as a load sensor provided in the seat, the airbag ECU or the like as described above When the ignition signal is output from the control means to the ignition device of the inflator 40, the ignition signal is also output to the ignition device of the micro gas generator 124. When the ignition device of the micro gas generator 124 is activated, the gas generating agent in the cylinder 112 is burned and gas is generated in the gas generating unit 122. Thereby, the gas generated in the gas generating part 122 is supplied between the wall part 118 in the cylinder 112 and the piston 114, and as a result, as shown in FIG. When the internal pressure of the cylinder 112 rises, the piston 114 slides to the other end side of the cylinder 112.

  When the holding rod 116 is pulled into the cylinder 112 from the proximal end side by the sliding of the piston 114, the holding rod 116 comes out of the hanging ring 136 as shown in FIG. When the holding rod 116 comes out of the hanging ring 136 in this way, the holding of the tether 88 by the holding rod 116 is canceled. When the bag 30 is inflated and deployed in this state, the internal pressure of the bag 30 pushes the tube vent 84 out of the hole 82. As a result, the tube vent 84 is inverted inside and outside while the proximal end of the tube vent 84 comes out of the bag body 60 from the hole 82.

  In this way, when the entire tube vent 84 extends outside the bag body 60 as shown in FIG. 4 while gradually reversing from the base end side, the gas in the bag body 30 is released from the hole 82. It flows into the tube vent 84, the tube vent 84 swells with the pressure of this gas, and the front-end | tip part of the tube vent 84 is open | released. Thereby, the inside and outside of the bag body 60 are communicated with each other via the tube vent 84, and the gas in the bag body 30 is released to the outside of the bag body 30. In this way, by releasing the gas in the bag body 30 and reducing the internal pressure of the bag body 30, when the relatively small passenger is received by the bag body 30, the tension of the bag body 30 is reduced. Is weak.

  Here, in the airbag device 10, the hole 82 is formed in the side base cloth 64 whose outer surface faces inward in the width direction of the vehicle 14 in the inflated and deployed state of the bag body 30, and a tube is formed around the hole 82. The base end portion of the vent 84 is connected (that is, the tube vent 84 is provided on the side base cloth 64 whose outer surface faces inward in the width direction of the vehicle 14 in the inflated and deployed state of the bag body 30). On the other hand, the hole 82 is not formed and the tube vent 84 is not provided in the side base cloth 62 whose outer surface faces outward in the width direction of the vehicle 14 in the inflated and deployed state of the bag body 30.

  For this reason, even if the tube vent 84 extends to the outside of the bag body 30, the window glass of the vehicle 14 on the outer side in the vehicle width direction of the bag body 30 in the inflated and deployed state, the front pillar constituting the vehicle body, etc. The tube vent 84 is not interfered. As a result, the tube vent 84 sufficiently expands and expands to the outside of the bag body 30 with the gas from the bag body 30, and the gas can be smoothly discharged from the tube vent 84.

  In the present embodiment, since the holding rod 116 passes through the hanging ring 136 of the tether 88, the proximal end side of the tether 88 is held by the holding rod 116, and is held by the holding rod 116 coming out of the hanging ring 136. The holding of the base end side of the tether 88 by the rod 116 is eliminated. However, the configuration of the holding of the base end side of the tether 88 and the elimination thereof are not limited to such a mode. For example, the base end side of the tether 88 is fixed to the base plate 12 in a state where the tether 88 is pulled out to the back side of the base plate 12, and the tether 88 is cut by a cutting tool (cutter) that slides when the micro gas generator 124 is operated. A configuration in which the holding of the tether 88 by the guide 148 is eliminated may be employed.

<Configuration of Second Embodiment>
Next, another embodiment of that. In the following description of each embodiment, the same parts as those in the previous embodiment are described in the same manner as the embodiment described above including the first embodiment. Reference numerals are assigned and detailed description thereof is omitted.

  FIG. 9 is a perspective view corresponding to FIG. 1 for explaining the airbag device 10 according to the first embodiment of the present invention, in which a main part of the airbag device 180 according to the second embodiment of the present invention is shown. Yes.

As shown in this figure, the airbag device 180 does not include the bag body 30 but includes a bag body 182 instead. The bag body 182 includes a bag body 60 composed of side base cloths 62 and 64 and an outer peripheral base cloth 66, but the bag body 182 of the airbag device 180 is provided with holes as outer holes in the side base cloth 62. A portion 184 is formed. The hole 184 is formed to face the hole 82 along the vehicle width direction when the bag body 182 is inflated and deployed. Moreover, the opening shape of the hole 184 is the same as that of the hole 82. A cylindrical dummy tube 186 is provided in the side base cloth 62 corresponding to the hole 184.

  In this embodiment, the dummy tube 186 has a cylindrical shape with an open base end, and the shape of the dummy tube 186 viewed from a direction orthogonal to the opening direction is basically the same as the tube vent 84. Has been. A base end portion of the hole 184 is connected to the side base cloth 62 along the periphery of the dummy tube 186. However, unlike the tube vent 84 that is open at both ends, a bottom portion 188 is formed at the tip of the dummy tube 186, and the tip of the dummy tube 186 is closed.

  Further, one end portion of the tether 190 is locked to the bottom portion 188 inside the dummy tube 186. The tether 190 is formed in a flexible long string shape or a long and narrow band shape, and the other end side of the tether 190 passes through the inside of the bag body 60 and is formed on the vehicle 14. It passes through the hole 80 and extends to the outside of the base plate 12. As shown in FIG. 12, a hanging ring 192 is formed at the other end of the tether 190, and the holding rod 116 penetrating the hanging ring 136 of the tether 88 passes through the hanging ring 192.

<Operation and Effect of Second Embodiment>
Next, the operation and effect of the present embodiment will be described.

  In the airbag device 180, the hole 184 is separated from the base plate 12 together with the hole 82 in the process in which the bag body 182 is inflated and deployed. For this reason, the tether 190 is extended together with the tether 88. Accordingly, as shown in FIG. 10, in a state where the tube vent 84 is pulled and held by the tether 88 so that the distal end side of the tube vent 84 extends toward the inner side of the bag body 60 with respect to the proximal end side. The dummy tube 186 is pulled and held by the tether 190 so that the distal end side of the dummy tube 186 extends inward of the bag body 60 with respect to the proximal end side.

  Further, when the holding rod 116 comes out of the hanging ring 136 by operating the micro gas generator 124 of the tether holding device 100, the holding rod 116 also comes out from the hanging ring 192. Therefore, in this state, the holding of the tethers 88 and 190 by the holding rod 116 is canceled. When the bag body 182 is inflated and deployed in this state, the internal pressure of the bag body 182 pushes the tube vent 84 out of the hole 82 and pushes the dummy tube 186 out of the hole 184. As a result, the tube vent 84 has its proximal end protruding from the hole 82 to the outside of the bag body 60 and the inside and outside are reversed, and the dummy tube 186 has its proximal end protruding from the hole 184 to the outside of the bag body 60. The inside and outside are reversed.

  In this manner, while the tube vent 84 and the dummy tube 186 are gradually reversed from the base end side, as shown in FIG. 11, the tube vent 84 and the dummy tube 186 all extend outside the bag body 60. Get out. In this state, the gas in the bag body 182 is released from the tube vent 84 through the hole 82, but since the tip of the dummy tube 186 is closed, no gas is released from the dummy tube 186.

  Thus, no gas is released from the dummy tube 186, but the tube vent 84 extends to the inner side in the vehicle width direction, whereas the dummy tube 186 extends to the outer side in the vehicle width direction. The balance is improved, and the bag body 182 can be prevented or effectively prevented from shaking from side to side. Moreover, the shape of the dummy tube 186 as viewed in a direction orthogonal to the opening direction of the dummy tube 186 is the same as that of the tube vent 84, and the hole portion 184 connected to the base end portion of the dummy tube 186 has a hole shape. The position of the hole 184 is the same as that of the portion 82, and faces the hole 82 in the vehicle width direction in a state where the airbag device 180 is inflated and deployed. In other words, the dummy tube 186 and the tube vent 84 are left-right symmetric (line symmetric) about the front-rear direction of the vehicle 14 in plan view. For this reason, the balance of the left and right is further improved, and the bag body 182 can be prevented or effectively suppressed from shaking to the left and right.

<Configuration of Third Embodiment>
Next , a third embodiment will be described.

  FIG. 13 is a front sectional view corresponding to FIG. 9 for explaining the airbag device 180 according to the second embodiment, showing the main part of the configuration of the airbag device 220 according to the present embodiment.

  As shown in this figure, the airbag device 220 does not include the bag body 182 but instead includes the bag body 222. The side base cloth 62 constituting the bag body 222 is not provided with 0196, and a dummy tube 224 is provided instead. Unlike 0196, the dummy tube 224 has an open end. However, the opening shape is sufficiently smaller than the opening shape at the tip of the tube vent 84, and therefore the resistance that the gas receives when the gas passes inside is sufficiently larger in the dummy tube 224 than in the tube vent 84. .

<Operation and Effect of Third Embodiment>
As described above, in the airbag device 220, when both the tube vent 84 and the dummy tube 224 extend to the outside of the bag body 222 in the inflated and deployed state of the bag body 222, both the tube vent 84 and the dummy tube 224 are used. Gas is released. However, as described above, the opening shape at the tip of the dummy tube 224 is sufficiently smaller than the opening shape at the tip of the tube vent 84, and the resistance that the gas receives when passing through the inside is greater than that of the tube vent 84. 224 is sufficiently large.

  For this reason, the amount of gas released per unit time is sufficiently larger in the tube vent 84 than in the dummy tube 224. If the dummy tube 224 is bent at the intermediate portion, the dummy tube 224 is closed. Even if the gas cannot be released, the gas can be sufficiently released from the tube vent 84, so the influence is small.

  Moreover, if the gas can be released from the dummy tube 224 without bending the dummy tube 224 at the middle portion as described above, the gas can be released from the tube vent 84 and the dummy tube 224. The shaking of the bag body 222 to the side opposite to the tube vent 84 caused by the discharge can be canceled by discharging the gas from the dummy tube 224. For this reason, the right-and-left balance of the bag body 222 can be improved effectively, and the swinging of the bag body 222 to the left and right can be extremely effectively prevented or suppressed.

<Configuration of Fourth Embodiment>
Next , a fourth embodiment will be described.

  FIG. 14 is a front sectional view corresponding to FIG. 4 for explaining the airbag apparatus 10 according to the first embodiment, showing the main part of the configuration of the airbag apparatus 260 according to the present embodiment. FIG. 15 is a schematic side view showing the overall configuration of the airbag apparatus 260.

As FIG. 14 shows, the airbag apparatus 260 is not provided with the bag body 30, but is provided with the bag body 262 instead. The side base cloth 64 constituting the bag body 262 is not formed with the hole portion 82, and instead formed with a hole portion 264 as an inner hole portion, and the bag corresponding to the periphery of the hole portion 264 The base end portion of the tube vent 84 is connected to the side base cloth 64 of the body 262.

  14 and 15 indicates the position of the rear end portion of the bag body 262 along the vehicle longitudinal direction in the inflated and deployed state of the bag body 262 (hereinafter, this position is referred to as “deployment” for convenience). The rear end portion of the bag body 262 in the state "). In contrast, the alternate long and short dash line Lf shown in FIG. 14 and FIG. 15 is a portion of the bag body 262 in the inflated and deployed state that is located on the vehicle interior side (that is, the airbag door 50 is deployed to expand the inner side. The position of the end portion on the front side of the vehicle (hereinafter referred to as “the front end portion of the bag body 262 in the unfolded state” for the sake of convenience) in the interior side of the rectangular hole formed in the instrument panel 16. "). Further, a one-dot chain line Lc shown in FIG. 14 and FIG. 15 is a central portion between the front end portion and the rear end portion of the bag body 262 in the unfolded state along the vehicle front-rear direction (hereinafter, this position is referred to as “ It is referred to as “the central portion of the bag body 262 in the unfolded state”).

  As shown in FIGS. 14 and 15, in the airbag device 260, the tube vent 84 is positioned on the vehicle front side with respect to the center portion of the bag body 262 in the deployed state when the bag body 262 is in an inflated and deployed state. In addition, the formation position of the hole 264, the shape of the tube vent 84, and the like are set. In particular, in the airbag device 260, the hole 264 is formed on the front side of the vehicle with respect to the central portion of the bag body 262 in the deployed state. Has been.

<Operation and Effect of Fourth Embodiment>
In the airbag device 260 having the above-described configuration, the bag body 262 is close to the swing center when the bag body 262 is about to swing left and right. For this reason, even if the gas is released from the tube vent 84 provided corresponding to the hole portion 264, the bag body 262 is not easily swayed from side to side unless the force of the gas is strong. For this reason, the left-right balance of the bag body 262 can be improved effectively, and the shaking of the bag body 262 to the left and right can be extremely effectively prevented or suppressed.

<Configuration of Fifth Embodiment>
Next , a fifth embodiment will be described.

  16 is a front sectional view corresponding to FIG. 4 for explaining the airbag device 10 according to the first embodiment. FIG. 17 is a schematic side view showing the overall configuration of the airbag apparatus 290.

As shown in these drawings, the airbag device 290 does not include the bag body 30 but instead includes the bag body 292. A hole 82 is not formed in the side base fabric 64 constituting the bag body 292, and instead a hole 294 is formed as an inner hole , and a bag corresponding to the periphery of the hole 294 is formed. The proximal end portion of the tube vent 84 is connected to the lateral base fabric 64 of the body 292.

  Here, the alternate long and short dash line Lr1 shown in FIG. 17 indicates the position of the end portion of the vehicle front side of the contact range between the bag body 292 in the inflated and deployed state and the windshield glass 296 of the vehicle 14, and the alternate long and short dash line Lf1 is in the inflated and deployed state. The position of the end portion on the vehicle rear side of the contact range between the bag body 292 and the windshield glass 296 of the vehicle 14 is shown. In contrast, the alternate long and short dash line Lr2 shown in FIG. 17 indicates the position of the end portion of the vehicle front side of the contact range between the bag body 292 in the inflated and deployed state and the instrument panel 16, and the alternate long and short dash line Lf2 in the inflated and deployed state. The position of the end portion on the vehicle rear side of the contact range between the bag body 292 and the instrument panel 16 is shown.

  In the airbag device 290, the position of the end portion on the vehicle rear side of the contact range between the bag body 292 and the windshield glass 296 in the inflated and deployed state of the bag body 292 is between the bag body 292 and the instrument panel 16. It is on the vehicle rear side relative to the position of the end portion on the vehicle rear side of the contact range. In addition, the position of the end portion on the vehicle front side of the contact range between the bag body 292 and the windshield glass 296 is more in front of the vehicle than the position of the end portion on the vehicle front side of the contact range between the bag body 292 and the instrument panel 16. It has become. That is, in the airbag device 290, when the bag body 292 in an inflated and deployed state is viewed along the vehicle vertical direction, the contact range between the bag body 292 and the windshield glass 296 along the vehicle longitudinal direction is along the vehicle longitudinal direction. The contact range between the bag body 292 and the instrument panel 16 is accommodated.

  Here, in the airbag device 290, with the tube vent 84 extending to the outside of the bag body 292, the position of the tube vent 84 along the vehicle longitudinal direction is the position of the bag body 292 and the instrument panel 16 described above. The formation position of the hole 294 and the shape of the tube vent 84 are set so as to be within the contact range with the vehicle, and in particular, in the airbag device 290, the formation position of the hole 294 along the vehicle front-rear direction is It is set to be within the contact range between the bag body 292 and the instrument panel 16.

<Operation and Effect of Fifth Embodiment>
Due to the release of gas from the tube vent 84, the bag body 292 in an inflated and deployed state tends to swing substantially in the left-right direction of the vehicle around an axis whose axial direction is substantially the vertical direction of the vehicle. On the other hand, the frictional resistance at the contact portion between the bag body 292 and the instrument panel 16 tries to resist the shaking of the bag body 292. For this reason, if the tube vent 84 is positioned substantially on the vehicle rear side of the contact range between the bag body 292 and the instrument panel 16 with the tube vent 84 extending to the outside of the bag body 292, The bag body 292 tends to swing left and right on the rear side of the contact range between the bag body 292 and the instrument panel 16.

  Here, in the airbag device 290, the tube vent 84 is located in the contact range between the bag body 292 and the instrument panel 16 with the tube vent 84 extending to the outside of the bag body 292. The shaking of the bag body 292 is reduced or prevented by the friction between the bag body 292 and the instrument panel 16. Further, in this way, the vibration caused by the release of gas from the tube vent 84 of the bag body 292 in the contact range between the bag body 292 and the instrument panel 16 is reduced or prevented. From the viewpoint of shaking, the influence of the release of gas from the tube vent 84 is difficult to reach behind the contact range between the bag body 292 and the instrument panel 16. For this reason, it is possible to effectively reduce or prevent the shaking of the bag body 292 on the rear side of the contact range between the bag body 292 and the instrument panel 16.

  Moreover, in the airbag device 290, the inflated and deployed bag body 292 is also in contact with the windshield glass 296, so that the bag body 292 is in contact with the windshield glass 296 with respect to the shaking of the bag body 292. It will also resist the friction between them. Here, in the airbag device 290, when the bag body 292 in an inflated and deployed state is viewed along the vehicle vertical direction, the contact range between the bag body 292 and the windshield glass 296 along the vehicle longitudinal direction is set in the vehicle longitudinal direction. The contact range between the bag body 292 and the instrument panel 16 is kept.

  Therefore, the tube vent 84 positioned within the contact range between the bag body 292 and the instrument panel 16 is naturally positioned within the contact range between the bag body 292 and the windshield glass 296. For this reason, not only the friction between the bag body 292 and the instrument panel 16 but also the friction between the bag body 292 and the windshield glass 296 reduces or prevents the bag body 292 from shaking. Can be more effectively reduced or prevented.

  In the present embodiment, the formation position of the hole 294 is set so as to be within the contact range between the bag body 292 and the instrument panel 16, but basically the bag body 292 and The formation position of the hole part 294 should just be set ahead rather than the edge part of the vehicle rear side of the contact range with the instrument panel 16.

  That is, when the position where the hole 294 is formed at the front side of the vehicle front side end of the contact range between the bag 292 and the instrument panel 16, the position where the hole 294 is formed is the bag 292 and the instrument. The contact area with the panel 16 will be deviated. However, even in such a configuration, the above-described friction resists the shaking of the bag body 292 caused by the release of the gas from the tube vent 84, and the bag body 292 and the instrument panel 16 are not affected. There is no change in that the shaking of the bag body 292 on the rear side of the contact range is effectively prevented or reduced.

  Further, in the present embodiment, when the inflated and deployed bag body 292 is viewed along the vehicle vertical direction, the contact range between the bag body 292 and the windshield glass 296 along the vehicle longitudinal direction is aligned with the vehicle longitudinal direction. The contact range between the bag body 292 and the instrument panel 16 was within the range. However, depending on the inclination of the windshield glass 296, the shape of the instrument panel 16, and the deployed shape of the bag body 292, when the inflated and deployed bag body 292 is viewed along the vehicle vertical direction, The contact range between the bag body 292 and the windshield glass 296 is not within the contact range between the bag body 292 and the windshield glass 296 along the vehicle front-rear direction. In some cases, a part or the whole of the vehicle is shifted to the vehicle front side or the rear side with respect to the contact range between the bag body 292 and the instrument panel 16.

  Even in such a configuration, the vehicle rear side end portion of the contact range between the bag body 292 and the windshield glass 296 and the vehicle rear side end portion of the contact range between the bag body 292 and the instrument panel 16 are also illustrated. Of these, if the formation position of the hole 294 is set on the front side rather than the position on the front side of the vehicle, the same effect as in the above-described embodiment can be obtained.

  Further, in the present embodiment, in the inflated and deployed state of the bag body 292, the bag body 292 and the instrument on the front side of the vehicle with respect to the position of the end portion on the vehicle rear side of the contact range between the bag body 292 and the windshield glass 296. The formation position of the hole 294 is the vehicle front side from the end portion on the vehicle rear side of the contact range with the ment panel 16. However, as described above, the friction at the contact portion between the bag body 292 and the windshield glass 296 also resists the shaking of the bag body 292. For example, after the vehicle in the contact area between the bag body 292 and the instrument panel 16 is reached. Even if the formation position of the hole 294 is set on the rear side of the vehicle with respect to the end on the side, the formation position of the hole 294 is on the rear side of the vehicle in the contact range between the bag body 292 and the windshield glass 296. Although the effect of friction between the bag body 292 and the instrument panel 16 is reduced if it is on the front side from the end portion, the above-described implementation of the friction between the bag body 292 and the windshield glass 296 is performed. The same effect as that of the embodiment can be obtained.

  In addition, the present embodiment includes a vehicle rear side end portion of a contact range between the bag body 292 and the windshield glass 296 and a vehicle rear side end portion of the contact range between the bag body 292 and the instrument panel 16. The formation position of the hole 294 is set in front of the end portion on the vehicle rear side of the contact range between the bag body 292 and the instrument panel 16 which is located on the vehicle front side. However, in the present embodiment, due to the friction between the instrument panel 16 and the windshield glass 296 and the bag body 292, the contact range between the instrument panel 16 and the windshield glass 296 and the bag body 292 is behind, It is only necessary to reduce the influence of the gas released from the tube vent 84 on the bag body 292 and prevent the bag body 292 from shaking.

  Therefore, strictly speaking, in this sense, all of the holes 294 may not be positioned in front of the end of the contact range between the bag body 292 and the instrument panel 16 on the vehicle rear side. Only a part of 294 is positioned in front of the vehicle rear side end of the contact range between the bag body 292 and the instrument panel 16, and the other part of the hole 294 is the bag body 292 and the instrument panel. The structure located in the back side rather than the edge part of the vehicle rear side of the contact range with 16 may be sufficient.

1 is a perspective view of an airbag device according to a first embodiment of the present invention. It is a top view of the airbag apparatus installation site | part in a vehicle interior in the state which the airbag apparatus which concerns on the 1st Embodiment of this invention is not act | operating. FIG. 3 is a plan view corresponding to FIG. 2 showing a state in which the bag body is inflated and deployed while the distal end side of the tube vent is held. FIG. 3 is a plan view corresponding to FIG. 2, showing a state in which the holding of the tube vent at the distal end side is canceled and the tube vent extends out of the bag body. It is the perspective view which looked at the airbag apparatus which concerns on the 1st Embodiment of this invention from the back surface side in the folding state of a bag body. It is sectional drawing which shows the structure of a holding means. It is the perspective view which expanded the structure of the holding means. It is sectional drawing corresponding to FIG. 6 which shows the state which the holding means act | operated. It is a perspective view of the airbag apparatus which concerns on the 2nd Embodiment of this invention. FIG. 4 is a plan view corresponding to FIG. 3 showing a state in which the bag body is inflated and deployed while the distal end side of the tube vent is held. FIG. 5 is a plan view corresponding to FIG. 4, showing a state in which the holding of the tube vent on the distal end side is canceled and the tube vent extends out of the bag body. It is the expansion perspective view which looked at the airbag apparatus which concerns on the 2nd Embodiment of this invention from the back surface side in the folded state of a bag body. FIG. 6 is a plan view corresponding to FIG. 4 showing a state in which holding of the tube vent at the tip end side is canceled and the tube vent extends out of the bag body in the airbag apparatus according to the third embodiment of the present invention. FIG. 6 is a plan view corresponding to FIG. 4 showing a state in which the holding of the tube vent on the distal end side is canceled and the tube vent extends out of the bag body in the airbag device according to the fourth embodiment of the present invention. It is a side view which shows the outline of the whole structure of the airbag apparatus which concerns on the 4th Embodiment of this invention. FIG. 9 is a plan view corresponding to FIG. 4 showing a state in which holding of the tube vent on the tip side is canceled and the tube vent extends out of the bag body in the airbag apparatus according to the fifth embodiment of the present invention. It is a side view which shows the outline of the whole structure of the airbag apparatus which concerns on the 5th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Airbag apparatus 16 Instrument panel 30 Bag body 82 Hole part 84 Tube vent (gas pressure adjustment means)
180 Airbag Device 182 Bag Body 184 Hole 186 Dummy Tube 220 Airbag Device 222 Bag Body 224 Dummy Tube 260 Airbag Device 262 Bag Body 264 Hole 290 Airbag Device 292 Bag Body 294 Hole 296 Windshield Glass

Claims (6)

A bag body that expands and expands when gas is supplied inside and the internal pressure rises;
The base end is connected to the edge of the inner hole formed in the side portion of the bag body that is formed in a cylindrical shape and faces the inner side in the vehicle width direction of the vehicle in the inflated and deployed state of the bag body, distal end side the bag of outwardly extending out seeing the bag body gas releasably tube provided et the in the bag in the vehicle width direction inner side from the bag in an inflated deployed state of the bag Vent and
A base end portion is connected to an edge of an outer hole formed in a side portion of the bag body facing outward in the vehicle width direction in the inflated and deployed state of the bag body, and the distal end side of the bag body is increased by an increase in internal pressure. A cylindrical dummy vent that extends to the outside and whose front end opposite to the connection portion with the edge of the outer hole is closed,
One end is locked to the tip of the tube vent and the other end is held, and the tube vent is held in a state where the tip side of the tube vent is disposed inside the bag body, and the bag body is inflated and deployed. A tether that allows the tube vent to extend to the outside of the bag body by releasing the holding on the other end side when being done,
An airbag device comprising: An airbag device according to claim 1, and said dummy vent and the tube vent in inflated deployed state of the bag is provided symmetrically to the longitudinal direction of the vehicle to the axis. The airbag device according to claim 2, wherein the tube vent and the dummy vent have the same shape. And the vehicle rear side end portion of the inflated and deployed the bag, from the central portion along the longitudinal direction of the vehicle between the vehicle rear side end portion of the portion located on the interior of the vehicle of the bag was inflated and deployed The airbag device according to any one of claims 1 to 3 , wherein the tube vent is provided in front. Of the vehicle rear side end portion of the contact range between the inflated and deployed bag body and the instrument panel of the vehicle and the vehicle rear side end portion of the contact range between the inflated and deployed bag body and the vehicle windshield glass The airbag device according to any one of claims 1 to 4 , wherein the tube vent is provided so that at least a part of the tube vent is located on the vehicle front side rather than the side located on the vehicle rear side. . Of the vehicle rear side end portion of the contact range between the inflated and deployed bag body and the instrument panel of the vehicle and the vehicle rear side end portion of the contact range between the inflated and deployed bag body and the vehicle windshield glass The airbag device according to claim 5 , wherein the tube vent is provided so that at least a part of the tube vent is positioned on the vehicle front side rather than on the vehicle front side.

Images